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AP Biology 3.4 DNA, RNA and Inheritance Flashcards

Review of Big Idea 3A from AP

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710206386nucleotidesmonomers of nucleic acids made up of a 5-carbon sugar, a phosphate group, and a nitrogenous base0
710206414DNAa long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix1
145437804RNAA type of nucleic acid consisting of nucleotide monomers with a ribose sugar and the nitrogenous bases adenine (A), cytosine (C), guanine (G), and uracil (U); usually single-stranded; functions in protein synthesis and as the genome of some viruses.2
252197116base pairingPrinciple that bonds in DNA can form only between adenine and thymine and between guanine and cytosine3
25938790double helixThe form of native DNA, referring to its two adjacent polynucleotide strands wound into a spiral shape.4
416192124DNA polymeraseAn enzyme that catalyzes the elongation of new DNA (for example, at a replication fork) by addition of nucleotides to the 3' end of an existing chain5
198904178RNA polymeraseAn enzyme that links ribonucleotides into a growing RNA chain during transcription, based on complementary binding to nucleotides on a DNA template strand6
807972423replicationCopying process by which a cell duplicates its DNA7
380946164protein synthesisForming proteins based on information in DNA and carried out by RNA8
710536780polypeptideA polymer (chain) of many amino acids linked together by peptide bonds.9
846903513amino acidsBuilding blocks of protein10
652061954chromosomes"Color Bodies"; contain genetic material and are located in the nucleus of cell.11
403177560mRNAA type of RNA, synthesized from DNA, that attaches to ribosomes in the cytoplasm and specifies the primary structure of a protein; also called messenger RNA.12
513938823tRNAshort-chain RNA molecules present in the cell (in at least 20 varieties, each variety capable of combining with a specific amino acid) that attach the correct amino acid to the protein chain that is being synthesized at the ribosome of the cell (according13
676268645rRNARNA molecules that, together with proteins, make up ribosomes; the most abundant type of RNA14
194005322adenineA double-ring nitrogenous base found in DNA and RNA. Pairs with Thymine.15
148126031thymineA single-ring nitrogenous base found only in DNA. Pairs with Adenine.16
498911226cytosineA single-ring nitrogenous base found in DNA and RNA. Pair with guanine17
670037262guanineA double-ring nitrogenous base found in DNA and RNA. Binds with cytosine.18
605225021uracila nitrogen-containing base found in RNA (but not in DNA) and derived from pyrimidine. Binds with adenine19
716983363codonA specific sequence of three adjacent bases on a strand of DNA or RNA that provides genetic code information for a particular amino acid20
467256758anticodongroup of three bases on a tRNA molecule that are complementary to an mRNA codon21
857132823intronA segment of a gene situated between exons that is removed before translation of messenger RNA and does not function in coding for protein synthesis.22
69558475exonA sequence within a primary transcript that remains in the RNA after RNA processing; also refers to the region of DNA from which this sequence was transcribed23
711910513promoterA specific nucleotide sequence in the DNA of a gene that binds RNA polymerase, positioning it to start transcribing RNA at the appropriate place.24
617054173histoneA small protein with a high proportion of positively charged amino acids that binds to the negatively charged DNA and plays a key role in chromatin structure25
572881306nucleosomeThe basic, bead-like unit of DNA packing in eukaryotes, consisting of a segment of DNA wound around a protein core composed of two copies of each of four types of histone.26
145154075ribosomeA complex of rRNA and protein molecules that functions as a site of protein synthesis in the cytoplasm; consists of a large and a small subunit. In eukaryotic cells, each subunit is assembled in the nucleolus27
213105032translationThe synthesis of a polypeptide using the genetic information encoded in a mRNA molecule. There is a change of "language" from nucleotides to amino acids.28
363597840transcriptionThe synthesis of RNA using a DNA template.29
457563647transformationA change in genotype and phenotype due to the assimilation of external DNA by a cell.30
193015602eukaryoteA cell that contains a nucleus and membrane bound organelles31
254563777prokaryoteA unicellular organism that lacks a nucleus and membrane bound organelles32
201048525mutationA change in the nucleotide sequence of an organism's DNA or in the DNA or RNA of a virus.33
593252022gene mutationA change in the sequence of the bases in a gene, which changes the structure of the polypeptide that the gene codes for.34
1320494441chromosomal mutationA change in the chromosome structure, resulting in new gene combinations.35
875164453substitutionA type of point mutation; the replacement of one nucleotide and its partner in the complementary DNA strand by another pair of nucleotides.36
233458455deletiona type of gene mutation in which a nucleotide is deleted37
243276571insertionA mutation involving the addition of one or more nucleotides pairs to a gene.38
17392237duplicationAn aberration in chromosome structure due to the fusion with a fragment from a homologous chromosome, such that a portion of the chromosome is duplicated39
545438561inversionAn aberration in chromosome structure resulting from reattachment of a chromosomal fragment in a reverse orientation to the chromosome from which it originated.40
13234119translocationAn aberration in chromosome structure resulting from attachment of a chromosomal fragment to a nonhomologous chromosome.41
763546596terminatorIn bacteria, a sequence of nucleotides in DNA that marks the end of a gene and signals RNA polymerase to release the newly made RNA molecule and detach from the DNA.42
1009894364bacteriophageA virus that infects bacteria; also called a phage.43
994994449TATA boxA promoter DNA sequence crucial in forming the transcription initiation complex.44
249851904Central dogmaDNA -> RNA -> Protein45
781278540James Watson and Francis Crick1953. Built first accepted DNA model explaining specific structure and properties of DNA.46
377575118Frederick GriffithBritish Medical officer who performed experiment using 2 varieties of (streptococcus pneumonia) , pathogenic/ non pathogenic, that led to discovery of DNA, concluded there was is a TRANSFORMATION from dead bacteria to live bacteria, studied the transforming substance47
132873957Rosalind FranklinWoman who generated x-ray images of DNA, she povided Watson and Crick with key data about DNA48
585405394Alfred Hershey and Martha ChaseDetermined that genetic DNA, not protein, was the genetic material using experiments about bacteriophages49

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